Digital phase shift circuit and digital phase shifter

A digital phase shift circuit comprising:

• a signal line extending in a predetermined direction;
• two inner lines disposed on both one side and another side of the signal line and separated a predetermined distance from the signal line;
• two outer lines provided at positions which are farther from the signal line than the inner lines on both the one side and the other side;
• a first grounding conductor electrically connected to one end of each of the inner lines and the outer lines;
• a second grounding conductor electrically connected to other ends of the outer lines;
• a first electronic switch connected between another end of an inner line of the inner lines on the one side and the second grounding conductor;
• and
• a second electronic switch connected between another end of an inner line of the inner lines on the other side and the second grounding conductor,
• wherein the predetermined distance is set to be less than 10 μm.